Back to Top

Battery Pack

SKU family: 0105
Replacement/Spare battery pack
Contact us directly at 610-447-1555 for Government pricing
 Replacement-Spare-Battery-Pack-Cox-Box-Megaphone.jpg (31.28 kB)

Click on image to zoom


Battery Pack Overview

Replacement/Spare battery pack for Cox Box & Megaphone

SKU: 0105

Be the first to review this product


Three cell lithium polymer rechargeable with on-board fuel gauging.


May be charged in Cox Box or in NK Battery Charger. Charging time from fully drained to fully charged: 6 hours. Charge will be retained in a charged pack for 4 weeks stored outside of the Cox Box or Blue Ocean Megaphone.


930 mAh, 8 Wh. Performance capacity varies greatly with volume and quantity of speech as well as number of speakers. 3 hours expected in Cox Box with 3/4 volume, talking 50% of the time, using 3 speakers.  As much as 10 hours with more intermittent use, such as with Blue Ocean Megaphone.

Life Expectancy: 

Number of lifetime charge cycles depends on many factors, including depth of charge/discharge and operating and charging temperatures. As a guideline, packs can be expected to provide approximately three years of useful life (75% or better of original capacity) when employed 6 days a week, seven months of the year.


4oz | 105 g.


2.94 x 1.80 x 1.52 in | 7.46 x 4.57 x 3.86 cm.

Watt Hours:

Battery Time:




8 Hours

11.1 volts

Does NOT float.

Drop Resistance: 

Not tested separately. Meets MIL-STD-810G Procedure IV Transit Shock Standard (26 drops from 4 feet | 1.2 meters) when installed in Cox Box or Blue Ocean Megaphone.


IP67 – Fully protected against dust and grit entry, withstands 30 minutes submersion to 3 feet | 1 meter.


Charging:  32 to 113°F |  0 to 45°C.

Operating & Storage:  -4 to 113°F |  -20 to 45°C.


CE, RoHS, UN Transportation Safety.


Learn more about Nielsen-Kellerman

Sign up to be notified about the
latest NK product news and Special Offers!

For International Orders, Find Your Dealer